There are color removers that do not contain bleach, Color Fix and Igora Modulat are two that don't. When removing processed dye, Color Fix comes with a liquid lotion after you use to see if there is any tint left in the hair. If there is when retinting the peroxide in the new tint will activate and make the hair go darker again.
There are color removers that contain bleach- Clairol Uncolor is one I don't recommend them, they are hard on hair. It is possible to bleach tinted hair but I don't think bleaching black is a good idea that can cause alot of damage. Color Fix or Igora Modulat would be best for trying to remove black tint, unless it's Feria.
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